Embibe Experts Solutions for Chapter: Electrostatic Potential and Capacitance, Exercise 1: Madhya Pradesh Board-2019

A Leclanche cell is balanced on length $280 \mathrm{cm}$ of the potentiometer wire. When a Daniel cell is joined in series with this cell, the balance point is obtained at $480 \mathrm{cm}$ distance. Calculate the $\mathrm{e}.\mathrm{m}.\mathrm{f}.\mathrm{s}$ of the two cells.

Derive expression for the capacity of a parallel plate condenser. How can its capacity be increased?

Explain series combination and parallel combination of condensers with circuit diagram and obtain expressions for equivalent of both type of combinations.

Derive the expression for capacitance of a parallel plate capacitor. If a dielectric medium is placed in between the plates. How is its capacitance affected?

What is the direction of electron flow: from low potential to high potential or from high potential to low potential?